166116879 has 32 divisors (see below), whose sum is σ = 265113600. Its totient is φ = 102500640.

The previous prime is 166116859. The next prime is 166116883. The reversal of 166116879 is 978611661.

It is not a de Polignac number, because 166116879 - 2¹¹ = 166114831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166116859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14937 + ... + 23565.

It is an arithmetic number, because the mean of its divisors is an integer number (8284800).

Almost surely, 2^166116879 is an apocalyptic number.

166116879 is a deficient number, since it is larger than the sum of its proper divisors (98996721).

166116879 is a wasteful number, since it uses less digits than its factorization.

166116879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8692 (or 8686 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 166116879 is about 12888.6337134702. The cubic root of 166116879 is about 549.7154219265.

The spelling of 166116879 in words is "one hundred sixty-six million, one hundred sixteen thousand, eight hundred seventy-nine".